ZHCSLN5D december 2010 – september 2020 BQ24133
PRODUCTION DATA
The charge uses a SLEEP comparator to determine the source of power on the AVCC pin because AVCC can be supplied either from the battery or the adapter. With the adapter source present, if the AVCC voltage is greater than the SRN voltage, the charger exits SLEEP mode. If all conditions are met for charging, the charger then starts charge the battery (see Section 9.3.9). If SRN voltage is greater than AVCC, the charger enters low quiescent current SLEEP mode to minimize current drain from the battery. During SLEEP mode, the VREF output turns off and the STAT pin goes to high impedance.
If AVCC is below the UVLO threshold, the device is disabled.